Evidence map›Paper›PMID 32904583›Full record

ArticleERJ open research2020

The airway microbiota and exacerbations of COPD.

Elise Orvedal Leiten, Rune Nielsen, Harald Gotten Wiker, Per Sigvald Bakke, Einar Marius Hjellestad Martinsen, Christine Drengenes, Solveig Tangedal, Gunnar Reksten Husebø, Tomas Mikal Lind Eagan

Abstract read
In one paragraph

Article in ERJ open research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

16 citing papers in PubMed.

  1. Review
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  12. Article
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  14. Observational
  15. The lung microbiome: progress and promise.The Journal of clinical investigation · 2021
    Review
  16. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Elise Orvedal LeitenDept of Clinical Science, University of Bergen, Bergen, Norway.ORCID https://orcid.org/0000-0002-5588-9076
Rune NielsenDept of Clinical Science, University of Bergen, Bergen, Norway.
Harald Gotten WikerDept of Clinical Science, University of Bergen, Bergen, Norway.
Per Sigvald BakkeDept of Clinical Science, University of Bergen, Bergen, Norway.
Einar Marius Hjellestad MartinsenDept of Clinical Science, University of Bergen, Bergen, Norway.ORCID https://orcid.org/0000-0001-7368-2549
Christine DrengenesDept of Clinical Science, University of Bergen, Bergen, Norway.
Solveig TangedalDept of Clinical Science, University of Bergen, Bergen, Norway.
Gunnar Reksten HusebøDept of Clinical Science, University of Bergen, Bergen, Norway.
Tomas Mikal Lind EaganDept of Clinical Science, University of Bergen, Bergen, Norway.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimThe aim of this study was to investigate whether the compositionality of the lower airway microbiota predicts later exacerbation risk in persons with COPD in a cohort study. MATERIALS AND

methodsWe collected lower airways microbiota samples by bronchoalveolar lavage and protected specimen brushes, and oral wash samples from 122 participants with COPD. Bacterial DNA was extracted from all samples, before we sequenced the V3-V4 region of the 16S RNA gene. The frequency of moderate and severe COPD exacerbations was surveyed in telephone interviews and in a follow-up visit. Compositional taxonomy and α and β diversity were compared between participants with and without later exacerbations.

resultsThe four most abundant phyla were Firmicutes, Bacteroidetes, Proteobacteria and Fusobacteria in both groups, and the four most abundant genera were

conclusionThe findings from the current study indicate that individual differences in the lower airway microbiota in persons with COPD far outweigh group differences between frequent and nonfrequent COPD exacerbators, and that the compositionality of the microbiota is so complex as to present large challenges for use as a biomarker of later exacerbations.

Identifiers

PMID32904583
PMCPMC7456643

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.